Multi-phase hydrodynamic simulations on parallel computer
3D numerical simulations for multi-phase flows have been implemented on the VPP500/28 system at RIKEN.
The physical processes are computed by using a splitting solution approach. Color functions are used to identified different materials. An advection scheme which is able to keep the compact thickness of the interfaces is employed to compute the color function. The scheme appears geometrically faithful and robust even for complex topology. A pressure based algorithm is employed to cover the materials of different equations of state, and a velocity-stress linked treatment is used to deal with different constitutive relations. All forces are evaluated by volume force formulations so as to make the model completely ‘grid based’ and suitable for parallel environment.
Some 3D samples of multi-phase flows, such as macro-particle of solid in viscous flow, suspended rigid object in stratified fluid and bubble dynamics, were calculated.
KeywordsCFD parallel computing multi-phase flow 3D simulation
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